Micro–macro properties of plastic concrete anti-seepage wall materials mixed with low-liquid limit clay

Yan Shi,Xiang Li,Xia Chen,Jiazheng Li,Ziling Peng

doi:10.1177/1687814019849736

Abstract

In this study, the micro–macro properties of plastic concrete mixed with low-liquid limit clay were explored, including the mechanical properties, deformation, impermeability, triaxial stress–strai...

Highlights

Plastic concrete is a commonly used anti-seepage material for walls since it possesses considerable strength, lower elasticity modulus, higher impermeability, and adaptability to deformation.[1,2] During the preparation, a part of the cement in concrete was replaced by clay, bentonite, or other admixtures
In China, plastic concrete was used for the anti-seepage wall of a cofferdam in the Shuikou Hydropower Station for the first time in 1989.4 After that, it was used in a number of other hydropower projects, such as the Xiaolangdi dam, auxiliary dam of the Danjiangkou reservoir, and the first and second stage cofferdams of the Three Gorges project.[5]
The results showed that the plastic concrete mixture had good flow properties with no bleeding or segregation problems

Summary

Introduction

Plastic concrete is a commonly used anti-seepage material for walls since it possesses considerable strength, lower elasticity modulus, higher impermeability, and adaptability to deformation.[1,2] During the preparation, a part of the cement in concrete was replaced by clay, bentonite, or other admixtures. The application of plastic concrete in construction began in the 1970s. It was initially used for anti-seepage walls suitable for medium and low water heads, followed by those for anti-seepage walls of high water head in the 1980s.3. In China, plastic concrete was used for the anti-seepage wall of a cofferdam in the Shuikou Hydropower Station for the first time in 1989.4 After that, it was used in a number of other hydropower projects, such as the Xiaolangdi dam, auxiliary dam of the Danjiangkou reservoir, and the first and second stage cofferdams of the Three Gorges project.[5] Hitherto, plastic concrete has been extensively used for such purposes as dam construction, Research Center of Water Engineering Safety and Disaster Prevention of Ministry of Water Resources, Changjiang River Scientific Research Institute, Wuhan, China

Objectives

Results

Conclusion